package main

import "fmt"

func main() {
	stuIds := make([]string, 5)
	for idx, val := range stuIds {
		fmt.Printf("idx=%d, val=%s\n", idx, val)
	}
	stuIds[3] = "zhangsan"
	for idx, val := range stuIds {
		fmt.Printf("idx=%d, val=%s\n", idx, val)
	}
}
